Formerly the "Imagine Games Network," IGN has become one of the largest and easiest to use sources for information on video games, gaming consoles, and related news. Users can browse content related to a single system (or PC platform) and read previews, reviews, and walkthroughs.
Mental Floss, with its amazing fact generator, lists, and quizzes will try to teach you something while keeping you entertained. The "Big Questions" section is probably the best place to get a quick dose of learning, backed up with science, and written for a casual audience.
As its name implies, this site is an aggregator for critical reviews of movies,
TV, games, and music. Instead of relying on a single point of view to help
make a purchasing decision, Metacritic allows you to gauge the reaction to
a new product on a much larger scale.
Playbill Vault is a comprehensive database of Broadway history from Playbill Inc.
See "This Day in History," weekly grosses, information on current and historic
shows, and performer biographies all collected here.